NAKAMURA, TAKAHIRO · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 2001
For optically coupling two optical waveguide devices differing in a spot size of a light wave, an optical coupling device converts the light wave into a light wave of a desired spot size using the interference between the radiation mode and the guided mode which occurs in an optical waveguide. One of the two optical waveguide devices has a first optical waveguide and a second optical waveguide joined to the end of the first optical waveguide, wherein the width or thickness of the second waveguide different from the width or thickness of the first optical waveguide, and the length is set to the length at which a light wave of a desired spot size can be obtained.
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BRADY, DOMINIC JOSEPH · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 2002
An optical coupling between first and second optical components 1, 8 in which an input face 2A through which light is to pass of the first component 1 being directly bonded to an output face 8C through which light is to pass of the second component 8. Such a coupling may be provided, for example, between a rib waveguide 2 and an optical fibre 7.
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WEI, YUMING · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 2018
An optical coupling connector, an optical coupling system, and a waveguide coupling method are provided. The optical coupling connector is configured to connect an optical fiber array and an optoelectronics chip, and includes an upper-layer connector and a lower-layer connector. The upper-layer connector includes N upper-layer waveguides, where N is a positive integer greater than or equal to 2. The lower-layer connector includes N lower-layer waveguides. The N lower-layer waveguides and the N upper-layer waveguides are coupled in a one-to-one correspondence. Each lower-layer waveguide includes a coupling waveguide portion, a pitch matching waveguide portion, and a signal light amplification waveguide portion.
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YOSHIDA, HARUHIKO · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 2012
In an optical coupling device, a main waveguide have a linearly extending portion and a tapered portion formed on a first clad layer. The waveguide has a width which is gradually reduced towards an incident side of the light wave. Auxiliary waveguides are formed on the both sides of the main waveguide, wherein each of the auxiliary waveguides has first and second tapered portions having widths which are gradually reduced toward both sides. A second clad layer is so formed as to cover the main and auxiliary waveguides and first clad layer, wherein the first clad layer guides the light wave introduced into the first clad layer or the second clad layer and gradually converge the light wave towards the main waveguide.
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KUO, CHANG-WEI · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 2015
An optical coupling connector includes an optical coupling lens, a circuit board, optical fibers, light receiving devices, and light emitting devices arranged on the circuit board. The optical coupling lens is fixed on the circuit board. The optical coupling lens includes a main body, a plurality of converging lenses, and a cover. The main body includes a first groove and second groove. The optical fibers are fixed by the first groove and the cover. The second groove has an oblique reflection surface to change the light direction. The plurality of converging lenses is fixed on a bottom of the main body and respectively aligned with the plurality of light receiving devices and the plurality of light emitting devices. The optical coupling lens converts electrical signals from light emitting devices to optical signals for optical fibers, and converts light signals from optical fibers to electrical signals for the light receiving devices.
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FUJIWARA, HIROYUKI, TORII, KAORU, SASAKI, MASARU · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 2017
An optical-fiber assembly, optical coupling device and optical-fiber coupling device provided with optical-fiber assembly. In the optical-fiber assembly, damaging a fixing material is prevented by preventing clad mode light from being incident on the fixing material and direct incidence, on the fixing material; of laser light emitted from a light-emitting element or an optical-fiber is prevented to generate resistance to the emitted light. The optical-fiber assembly constitutes by at least an optical-fiber and capillary. The optical-fiber is inserted into the capillary and one optical-fiber end is protruded outside the capillary. The optical-fiber outer periphery and capillary are fixed using fixing material and ceramic material disposed to be in contact with the entire optical-fiber outer circumference and have predetermined contact length in the optical-fiber axial direction. The position at which the ceramic material is set in front of the position of the fixing material as viewed from one optical-fiber end.
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TATUM, JIMMY A., GUENTER, JAMES K. · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 2003
A method and system for coupling a laser (e.g., vertical cavity surface emitting laser (VCSEL)) to an optical fiber is disclosed. A plurality of optical modes associated with a laser, e.g., a VCSEL, are scrambled, and radiation from the VCSEL can be focused on a fiber facet associated with the optical fiber. Thereafter, the VCSEL can be coupled to the optical fiber to thereby improve coupling repeatability while reducing mode selective coupling of the VCSEL to the optical fiber. The optical modes can be scrambled utilizing an optical scattering surface. Such an optical scattering surface can produce a Lambertian-like scattering source such that optical modes thereof are combinable to form a plurality of optical modes. The VCSEL can be coupled to said optical fiber by butt-coupling said optical fiber to the multimode VCSEL through a receiver formed in a housing for the VCSEL and/or by utilizing at least one lens for imaging radiation/signals onto a particular spot. Additionally, such a spot generally comprises a size larger than a core of said optical fiber to thereby reduce coupling variations thereof. The optical modes may also be scrambled utilizing an optical concentrator configured as a linear, conical, parabolic, or other shaped concentrator, which can be adapted for use in mixing optical modes. The optical modes can also be mixed utilizing an optical scattering surface to provide a Lambertian-like scattering source.
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NAKAGAWA, SHIGERU, NUMATA, HIDETOSHI, SUEOKA, KUNIAKI et al. · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 2012
An optical coupling structure that interfaces between optical devices mounted on a substrate and optical waveguides formed in the substrate. A manufacturing method includes preparing a wafer formed on an inorganic solid material on a dicing tape and cutting the back surface of the wafer to form substantially angled portions using a dicing blade having a point angle. The dicing tape is stripped from the wafer and the wafer is separated at the valleys between the substantially angled portions to obtain an optical coupling element. The obtained optical coupling element is a three-dimensional polyhedral light-reflecting member having a mirror surface corresponding to a surface of the wafer. The obtained optical coupling element is inserted into a trench that opens, substantially perpendicular to an optical waveguide of an optical transmission substrate, in the main surface of the optical transmission substrate to provide a structure for optical coupling with the outside.
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- · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 1973
1315333 Light guides UCENTIA PATENTVERWALTUNGSGmbH 22 Oct 1970 [23 Oct 1969] 50295/70 Heading G2J Two optical members are coupled together with a resonator between them. In Fig. 1 a light guide core 1 is surrounded by a coaxial glass fibre wave guide 2 and a refractive sheath 3. The end faces 4 of the members 1, 2, 3 are polished and a mirror coating is deposited thereon leaving an unmirrored aperture aligned with the core The end faces 4 provide a resonator 5 which may be in the form of a large diameter optical fibre of glass e.g. having a refractive index which varies parabolically radially of the fibre, on the end faces may be other than flat e.g. concave on parabolic and the light guides may be held together by adjusting devices 6 which space them to obtain a resonator having a frequency greater than half the wave length of a laser beam transmitted by the light guides. The optical member may be spaced apart by spacer rings secured by clamps.
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Kippenberg, Tobias, Jost, John, Anderson, Miles et al. · Infoscience (Ecole Polytechnique Fédérale de Lausanne) · 2019
The present invention concerns an optical coupling device including at least one supporting layer comprising a first support wall and a second support wall. The at least one supporting layer comprises at least one bridging waveguide for coupling electromagnetic radiation to and from an optical resonator or optical device, the at least one bridging waveguide extending between the first support wall and the second support wall.
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WEIDEL, EDGAR · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 1986
An optical coupling element is provided between a semiconductor transmitter, a semiconductor receiver and a lightwave guide. The optical coupling is effected through microoptics which are adjustable in a simple way. Such a coupling element is useful particularly as a subscriber's connection in an optical waveguide duplex or multiplex communication system and uses a reflective planar surface with a reflection which is responsive to the wavelength to pass light to the transmitted and reflected light to be received.
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Gordon L. Mitchell, William D. Scott, R. B. Smith · Defense Technical Information Center (DTIC) · 1976
Single mode fiber optic systems are crucial to the development of high bandwidth military communications. The crucial problem which remains to be solved is coupling between system components. The research detailed in this report has produced two new methods of coupling between semiconductor lasers, diffused modulators, and single mode fibers. For applications which can use butt joining techniques a transition structure which matches the geometries involved has been used. This transition is particularly effective in laser-fiber or laser modulator coupling situations. By properly choosing transition materials and physical dimensions we expect to increase laser coupling efficiency to at least 50%. It is now approximately 5-10%.
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WEBB, RODERICK, PETER · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 1990
PCT No. PCT/GB86/00352 Sec. 371 Date Feb. 18, 1987 Sec. 102(e) Date Feb. 18, 1987 PCT Filed Jun. 18, 1986 PCT Pub. No. WO86/07642 PCT Pub. Date Dec. 31, 1986.An optical coupling assembly is disclosed which comprises a semiconductor laser amplifier to which an optical control signal and an input signal are fed. The semiconductor laser amplifier is responsive to changes in amplitude of the control signal to produce corresponding phase shifts in the input signal. First and second optical couplers are positioned upstream and downstream of the laser amplifier so that a proportion of the input signal and control signal are fed along an optical fiber directly from the first optical coupler to the second coupler. The remaining portions of the input signal and control signal are fed to the laser amplifier where the input signal is phase shifted and then fed to the second coupler. The arrangement is such that the proportion of the input signal output from each output port of the second coupler is selectable by controlling the amplitude of the control signal.
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WANG, ZHIJIANG, YU, QINYUE, WANG, YING · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 2003
In the present invention, the methods and apparatus for making efficient laser beam coupling are disclosed. In particular, new structures for shaping and rearranging laser beams from diode laser array are disclosed. Along with the use of unique methods for coupling pumping laser beam into optical fiber or other media, high efficiency can be achieved. These aspects of the present invention will facilitate the realization of high-efficiency and high-power fiber lasers, fiber amplifiers, or other solid state lasers. The beam shaping structures can significantly improve the quality of the beams from diode laser array, and is easy to realize and less demanding in system alignment. Thus, a diode-pumped solid state laser of this invention may comprise a laser medium, a focusing means, a beam source comprising at least one laser diode array, a beam offsetting means, an image optics and a beam redirection means.
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HONMO HIROSHI, ITO MASATAKA · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 1992
PURPOSE:To obtain the small-sized optical coupling circuit having high efficiency in coupling between a semiconductor element and an optical fiber. CONSTITUTION:A near lens 2, the refractive index of which decreases in nearly square distribution with the distance from a central part and has the outside diameter nearly equal to the outside diameter of the glass part of the optical fiber is disposed in proximity to a semiconductor laser 1 on the optical axis of the light beam of 55mum wavelength outputted from the semiconductor laser The end face of the near parabolic lens 2 facing the semiconductor laser 1 side is polished to a hemispherical shape. The nearly focusing lens 2 is a multimode optical fiber having 125mum outside diameter, 50m core diameter and 0.2 numerical aperture. The semiconductor laser 1 is fixed onto a heat sink 3 in order to release heat. The single mode optical fiber 4 has 125mum outside diameter and 10mum core diameter. The near focusing lens 2 is equal in outside diameter to the optical fiber 4 and is small and, therefore, the optical coupling circuit is miniaturized and the coupling efficiency is as high as 3dB like heretofore.
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SAKAKIBARA MASAHIRO, NAKAMURA MITSUKO, OSHIMA SHIGERU · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 1989
PURPOSE:To prevent the dew condensation to a temp. control element which controls the temp. of a semiconductor light emitting element and to enable the high-speed modulation of the semiconductor light emitting element by providing the temp. control element into a package and injecting an adhesive resin into the package so as to cover this temp. control element. CONSTITUTION:The bonded body of a semiconductor laser 17 and an optical fiber 15 is housed into the package 11 in which a semiconductor cooler 20 is built and fixed to the prescribed position. The part of a hermetic sealing member 12 is soldered and fixed onto the semiconductor cooler 20. The adhesive resin 21 such as silicone rubber is injected into the package 11 contg. the semiconductor laser 17, the optical fiber 15, and the semiconductor cooler 20, etc. The dew condensation to the semiconductor cooler 20 is thereby prevented and the good temp. control is executed. The high-speed modulation of the semiconductor laser 17 is thus possible.
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- · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 1977
1482996 Optical connections SIEMENS A G 25 Nov 1974 [19 Dec 1973] 50908/74 Heading G2J Optical components, e.g. light guide 22 and laser diode 23, are connected by an interposed body 31 of exposed and developed negative transparent photolaquer, each component to be connected being in contact with a face of the laquer body, and each face of the laquer body being of the same size and shape as the respective component face. As shown in Fig. 4 a light guide 22 is fixed on a substrate 26 adjacent a laser diode 23, and a blob 27 of unexposed laquer is interposed therebetween. Light from source 28 is introduced to the guide 22 in such manner that the emergent light just illuminates the whole active face of diode 23, thereby exposing the laquer at 3 On development the exposed laquer 31 forms a matching light guide between components 22-23. The exposed laquer may be covered in material of lower refractive index or may be left in air. Fig. 2 (not shown) discloses a connection between two adjacent light guides at one face and three adjacent light guides at another.
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- · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 1983
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ÖHLANDER, ULF, HELMFRID, STEN, SAHLGREN, BENGT · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 2002
The invention relates to the coupling of light to and from an optical waveguide, such as an optical fibre. Light of a specific wavelength is deflected out from the fibre, or into the fibre, in a substantially transverse direction with respect to the propagation direction of light in the waveguide, by a deflector 16 arranged in the fibre core 10. Wavelength selectivity of the deflector 16 is provided by a Bragg grating means located in the fibre core 10. The deflected light is collimated, or converged towards a focus, by an interface 15 between a cladding 11, having one index of refraction, and an outer medium 12, having another index of refraction. The ratio between the radius of the cladding 11 and the radius of the core 10 made sufficiently small for the collimating, or converging, effect to appear.
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DAVIDSON, DANIEL, SKIDMORE, JOSEPH E., FINE, RICHARD A. · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 2010
The present invention is directed to systems and methods that couple together optical devices in a manner that prevents damaging light from escaping the coupling except through the devices. In order to prevent damaging light from coming into contact with the user, the present invention obscures the source optical device by using at least one moveable gate to prevent damaging light from being transmitted outside of the coupling until such time as the target optical device is fully inserted into the coupling, thereby preventing light that could potentially damage a person from escaping the system except through the optical device.
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